地质力学学报2017，Vol.23Issue(2)：224-231,8.
新疆哈密地区砂岩地震波速的实验研究及其对特殊地质填图物性工作的启示
THE EXPERIMENTAL RESEARCH OF SEISMIC WAVE VELOCITY OF SANDSTONES IN HAMI, XINJIANG AND THE ENLIGHTMENT TO THE WORK OF PROPERTY ON SPECIAL GEOLOGICAL MAPPING
摘要
Abstract
The seismic wave velocity of sandstones in Hami in the process of special geological mapping isstudied in this article. The effects of density, porosity and pressure on seismic wave velocity under different pressure (0~200 MPa) are analyzed by applying ZBL-U520 nonmetal ultrasonic detector and AutoLab 2000 computer-controlled servo hydraulic triaxial test system. The results show that wave velocity and density are positively correlated, but there is a negative correlation between wave velocity and porosity. The degree of linear relationship between density or porosity and P-wave is higher than that of S-wave. Both P- and S-wave velocities of sandstones in Hami area increase notably with the increasing pressure which denotes a strong logarithmic relationship. Besides, the adaptability of test methods of ZBL-U520 nonmetal ultrasonic detector and AutoLab 2000 computer-controlled servo hydraulic triaxial test system are analyzed. In conclusion, in respect of geological mapping it is suggested that not only should we collect samples to test the seismic wave velocity of rocks at normal temperatures and pressure, but also we should analyze the seismic wave characteristics under different formation pressure to comprehensively understand the seismic properties in special geological mapping.关键词
特殊地质填图/哈密地区砂岩地震波速/围压/孔隙度/密度Key words
special geological mapping/seismic wave velocity of sandstone in Hami area/confining pressure/porosity/density分类
天文与地球科学引用本文复制引用
王怀民,王红才,殷昌吉,李阿伟,赵卫华,杜威..新疆哈密地区砂岩地震波速的实验研究及其对特殊地质填图物性工作的启示[J].地质力学学报,2017,23(2):224-231,8.基金项目
中国地质调查局项目"特殊地质地貌区填图试点"(DD20160060) （DD20160060）
